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Re: [sumo-user] traci and libsumo 
Thank you, Jakob.

I tried "import libsumo.constants as tc"
and I get a "ModuleNotFoundError: No module named 'libsumo.constants'"
that is why I asked. I suppose the shortcut is not working anymore.

I'll remove the stepListener and I'll try again.

Cheers,
Lara

On Tue, 23 Apr 2019 12:26:13 +0200
Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:

> - libsumo.constants is the same as traci.constants
> - traci.addStepListener is a pure python client feature. It's missing from
> libsumo and all other traci clients (hence the error in simple.example.py)
> - the 'stageType' error was due to
> https://github.com/eclipse/sumo/issues/5502. Please update sumo and use the
> member 'type' instead.
> 
> regards,
> Jakob
> 
> 
> Am Di., 23. Apr. 2019 um 10:09 Uhr schrieb Lara CODECA <
> lara.codeca@xxxxxxxxxx>:  
> 
> > Hello Michael,
> >
> > I'm using python 3, so that is fine.
> > libsumo has not constant and no StepListener, so I still need to import
> > traci, right?
> >
> > Using
> > https://github.com/lcodeca/SUMOActivityGen/blob/master/activitygen.py and
> > fixing lines 34 and 35 to use libsumo you have the following error:
> >
> > Traceback (most recent call last):
> >   File "./activitygen.py", line 1342, in <module>
> >     _main()
> >   File "./activitygen.py", line 1327, in _main
> >     mobility.mobility_generation()
> >   File "./activitygen.py", line 223, in mobility_generation
> >     self._compute_trips_per_slice()
> >   File "./activitygen.py", line 365, in _compute_trips_per_slice
> >     _chain, _modes)
> >   File "./activitygen.py", line 521, in _generate_trip_traci
> >     route[-1].stageType == tc.STAGE_DRIVING):
> >   File
> > "/home/drone/Applications/SUMO/sumo-git/sumo/tools/libsumo/libsumo.py",
> > line 996, in <lambda>
> >     __getattr__ = lambda self, name: _swig_getattr(self, TraCIStage, name)
> >   File
> > "/home/drone/Applications/SUMO/sumo-git/sumo/tools/libsumo/libsumo.py",
> > line 80, in _swig_getattr
> >     raise AttributeError("'%s' object has no attribute '%s'" %
> > (class_type.__name__, name))
> > AttributeError: 'TraCIStage' object has no attribute 'stageType'
> >
> > The problem is not in the call:
> > route = traci.simulation.findIntermodalRoute(stage.fromEdge, p_edge,
> > depart=_new_start_time, walkFactor=.9, modes=_mode, pType=_ptype,
> > vType=_vtype)
> > but in the returned value. That is why I was looking for the
> > documentation..
> >
> > In https://github.com/lcodeca/PyPML/blob/master/examples/simple.example.py
> > if you change traci with libsumo,
> > the error is the following:
> > Traceback (most recent call last):
> >   File "./simple.example.py", line 125, in <module>
> >     _main()
> >   File "./simple.example.py", line 60, in _main
> >     monitor = ParkingMonitor(traci, parking_monitor_options)
> >   File "/home/drone/EURECOM/Projects/GITHUB/PyPML/pypml/pypml.py", line
> > 245, in __init__
> >     tc.VAR_PARKING_ENDING_VEHICLES_IDS))
> > TypeError: simulation_subscribe() takes no keyword arguments
> >
> > More precisely, here the question is in how to handle
> > self._traci_handler.simulation.subscribe(varIDs=(tc.VAR_PARKING_STARTING_VEHICLES_IDS,
> > tc.VAR_PARKING_ENDING_VEHICLES_IDS))
> > where self._traci_handler is the return value of traci.start()
> >
> > All the code works fine with SUMO 1.2.0 and Python TraCI APIs.
> >
> > Thanks for your time!
> > Lara
> >
> > On Fri, 19 Apr 2019 20:49:51 +0200
> > Michael Behrisch <oss@xxxxxxxxxxx> wrote:
> >  
> > > Hi Lara,
> > > if libsumo is compiled correctly and is in your python path (together
> > > with the dll / so file), it should really be just a matter of "import
> > > libsumo as traci". It works only with Python3 however. Please tell us
> > > what ypu tried and which errors occured.
> > >
> > > Best regards,
> > > Michael
> > >
> > > Am 18.04.19 um 10:35 schrieb Lara CODECA:  
> > > > Hello community,
> > > >
> > > > I wrote a python library that uses traci to implement a parking  
> > monitoring system (https://github.com/lcodeca/PyPML).  
> > > > I'm trying to find a way to use libsumo (or even better both, leaving  
> > the choice to the user) in order to improve the performances.  
> > > >
> > > > Unfortunately, although is written in https://sumo.dlr.de/wiki/Libsumo  
> > that "Existing traci scripts can mostly be reused by calling import libsumo
> > as traci", it's not true for me.  
> > > >
> > > > I always used http://sumo.sourceforge.net/pydoc/traci.html to use  
> > traci, but this is not true for libsumo.  
> > > > I'm trying to use  
> > https://sumo.dlr.de/daily/doxygen/d8/d1c/class_tra_c_i_a_p_i.html because
> > it's written "C++ interface based on static functions and a few simple
> > wrapper classes", but I don't understand how to apply this documentation to
> > a python3 style use of traci.  
> > > >
> > > > I cannot find any explicit example in the wiki that gives me the hint  
> > on how to do this.  
> > > >
> > > > I would love if someone could point me in the right direction..
> > > >
> > > > All the Best!
> > > > Lara
> > > >  
> > >
> > >  
> >
> >
> >
> > --
> > Lara CODECA
> > Postdoc
> > Tel : 04.93.00.81.51
> >
> > EURECOM
> > Campus SophiaTech
> > http://www.eurecom.fr/
> > _______________________________________________
> > sumo-user mailing list
> > sumo-user@xxxxxxxxxxx
> > To change your delivery options, retrieve your password, or unsubscribe
> > from this list, visit
> > https://www.eclipse.org/mailman/listinfo/sumo-user
> >  



-- 
Lara CODECA
Postdoc
Tel : 04.93.00.81.51

EURECOM
Campus SophiaTech
http://www.eurecom.fr/

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